* {
    margin: 0px;
    padding: 0px;
}
.live_head {
    display: inline-block;
    margin-left: 34%;
    margin-bottom: 1%;
    margin-top:6%;
    font: normal 700 4vw 'Microsoft Yahei';
    border-bottom: #ee9f00 solid 0.6vw;
    color: #ee9f00;
}
@media screen and (max-width : 600px){
.live_video {
    width: 100%;
    height: 85vw;
}
.live_head {
    margin-left: 20%;
    font: normal 700 6.5vw 'Microsoft Yahei';
    margin-top: 0%;
}
}
@media screen and (min-width : 600px){
.live_video {
    width: 100%;
    height: 61vw;
}   
.live_head {
    margin-top: 6%;
}
}
@media screen and (min-width : 900px){
.live_video {
    width: 70%;
    height: 36vw;
    margin-left: 16.5%;
}   
}

